Knob fastening installation and knob fastener



'N0v.21',.1939. 'H.'J.-MUIRPHY I 2.18032 .v

KNOB FASTENING INSTALLATION AND- KNOB FASTENER 7 Filed sbt. 4; 1937 I Inventor;

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Patented Nov. 21, 1939 v v v $180,929 'fv kwr PAT NT OFF-1a KNOB FASTENING INSTALLATION AND KNOB FASTENER Howard J. Murphy, Greenwood, Mass assignor to Unite d-Carr Fastener Corporation, Cambridge, Mass., a corporation oi'rMassachusetts Application September 4, 1937, Serial 4 Claims. (or zsw-sa) My invention relates to knobs and like fastening installations and fasteners for the same.

tener member thereto Fig. 2 is a bottom view similar to Fig. 1 showfastener member assembled with the knob member; s r

Fig. 3 is a section taken along the line 3-3 of Fig. 2 and showing a shaft member secured to the knob by means of my fastener member;

Fig. 4 is a section taken Fig.8;

Fig. 5 is a top view of my improved fastener Fig. 6 is a front view of the fastener member shown in Fig. 5;'and

Fig. 7 is a side view of the fastener member shownin Figs. 5 and 6.

extends from the end face 4 into the body of the knob in substantially right-angular relation to the plane of the end face, as most clearly shown along the 1ine 44 ofform of'a provided an attaching means in the prong-like portion l2 adapted to enter 2 adjacent the opening 6 when the spring tongue is finally seated within the opening (Fig. 3) so that if either the knob pulled relative to the other for the purpose of separating the parts, an edge of the free end of the tongue bites into the wall of the bore and resists such separation as it tends to flatten under stress.

The spring plate III .has an aperture [6 therein for receiving an end of the shaft member 3 and is inclined relative to the end face 4 of the body of the. knob so that in expanded position it may grip the shaft member by canting action (Fig. 3). It will be noted that the aperture l6 has a flat side l'l (Fig. 2) which cooperates with a flat side l8 of the .shaft member 3 so as to prevent-relative rotation of the parts when thesame are in fastened relation. At the opposite into the opening-1 of the knob until the engaged by a wallv of the bore the fastening action provided by the engagement as to permit the adjacent the aperture ber by a canting action.

end of the plate H) from that with which the return-bend portion II is integral I have .provided an ear-shaped releasing portion l9 which curves out of the plane of side of the plate upon which the return-bend portion II is disposed. The curved construction of the releasing portion forms a camming surface which serves to start contraction of the plate win the direction ofthe end face 4 when tool means extended through the opening 9 of the peripheral flange -8. Assembly of the fastener member 2 with the knob member I is a relatively simple matter and is carried out through first moving the pronglike attaching means I? of the fastener member spring tongue l4 abuts'the closed end of the opening 6, at which time the return-bend portion ll engages the end face 4 of the knob. When the attaching means I! is in final position within the opening I, the teeth l3 engage material of the knob member adjacent the opening for preventing withdrawal of the knob. Also, when the fastener member is seated in, said final position within the bore of theknob, the spring tongue I4 is compressed slightly so as to frictionally engage the (Fig. 3) with the result that of the tongue 14 with the wall of the bore and the fastening. action provided by the engagement of the teeth IS with the material adjacent the opening I combine to rigidly secure the parts together. when the fastener member is secured to the knob, the plate portion, I is in inclined relation to the face 4 with the opening I slightly out-of alignment with the shaft-receiving opening 6 of the body of the knob. Passage of the shaft member 3- through the opening I6 during assembly of the shaft member with the knob causes the plate ill to contract whereby the opening' l6 aligns with the opening 6 of the knob so through the spring plate into the bore of the knob. After pressure upon the shaft member for moving it into the bore of the knob has been released, the plate l0 expands so that material It engages the shaft mem- The shaft member is now securely attached to the knob member and may notbe released until the plate "I has been contracted sufficiently to substantially align the aperture 16 of the plate and the opening, 6 of the bore.

Thus by my invention I have provided an installation of simple construction comprising a l or the fastener 2 isthe plate in on that free end of the shaft 3 to extend knob member and a fastener member so rigidly assembled together that there is no chance for separation of the parts during normal usage of the knob member.

Although I have illustrated and described a preferred embodiment of my invention, I do not wish to be limited thereby because 'the scope of my invention is best defined in the following,

claims.-

I claim:

1. The combination with a shaft and'an article of manufacture having a bore, of a fastener member having a resilient boreand engaging the material of said article adjacent said bore for attaching said fastener to said article, and an apertured plate portion surrounding and normally pping said shaft as when biased with respect to a transverse plane through said shaft.

2. The combination with a shaft and an article of manufacture having a bore,-- of a fastener member having a resilient tongue portion at one end seated within said bore and engaging material of said article tured plate portion at the other end surrounding and normally gripping said shaft as when'biased, with respect to a transverse plane through said shaft, and an attaching tongue portion and said taching means having an engaging material of bore whereby said tooth-portion. cooperates with said tongue portion to secure said fastener firmly to said article.

I 3. A fastener installation comprising an article of manufacture, a fastener member assembled with said article and a shaft member, said article having a shaft-receiving opening and a second plate portion, said atintegral tooth portion opening for receiving an attaching means of said apertured resilient plate portion at the-other end disposed opposite the shaft-receiving opening of said article, said shaft extending through the aperture of said plate portion and into said shaftreceiving opening of said article, and said plate frictionally engaging said shaft for securing the shaft together, and an attaching means intermediate said spring portion and said plate portion, said attaching means beingseated within said second opening and having means en-v 'gaging material of said article adjacent said second opening'for cooperating with said-spring portion to secure said fastener firmly to said article.

4. The combination with a shaft and an article of manufacture having a bore of a fastener member having a resilient tongue portion at one end seated within said bore near its innermost end and engaging material of said article adjacent said bore at an angle of less than 90 to the axis of the bore, shaft-engaging means at the other end and attaching means providing the only means con- 'necting said tongue portion and said shaft-enaging means, said attaching means having a projecting means engaging the material of said article adjacent said bore and cooperating with adjacent said bore,'an apermeans intermediate said said tongue portion to securesaidfastener firmly said article adjacent said 

